Incandescent gas-burner.



Patented 'Dec. ll, I900.

R E mm Wm M 4 H U M LG BTm A L m so CEm Dm NP Am 0 N (No Moglel.)

NITE terns 'ATET FFIGEt CHARLES A. BLUHM, OF MICHIGAN CITY, INDIANA.

INCANDESCENT GAS-BURNER.

SPECIFICATION forming part of Letters Patent No. 663,803, dated December 11, 1900.

Application filed March 24, 1900. serial No. 10,081- (No model.

To aZZ whom, it may concern.- combustion-chamber for the purpose. In the.

Be it known that I, CHARLES A. BLUHM, a third place the hot-airdratt is created by the citizen of the United States of America, residflame itself after the gas is turned on. The

ing at Michigan City, in the county of La flame being located at the top of the burner 5 Porte and State of Indiana, have invented a in connection with the mantle and being the certain new and useful Improvement in Inhottest point and the draft-openings surcandescent Gas-Burners, of which the followrounding the combustion-chamber being loing is a specification. cated below at a point where the heat is not My invention relates to an improvement in so strong gives way to the heat above, and

i0 incandescent gas-burners. thereby causes a constant circulation of hot The object to be attained in an incandesa'ir surrounding and entering the combustion cent gas-burner is heat and, as far as possiand mixing chamber at the bottom through ble, to carry the heat to the top or highest the draft-openings. In the fourth place the point of the mantle in connection with a space between the preheating and combusi5 proper circulation of air, where it should retion chambers may be increased or decreased main without variation of light as long as by screwing up or down the combustionthe gas is turned on. Failure to recognize chamber for the regulation of the hot-air this point has resulted in lack of success in draft. In the fifth place a perfect regulation the construction of many, if not all, of the is provided for the flame of my burner in orzo incandescent gas-burners at present on the der to give the desired light by means of a market. The reason for this is that they are set-screw, the valve of which can be set when all regulated by cold-airdrafts at the bottom, once adjusted. Again, the invention conand as there are variations in the quality of sistsin a pillar which receives and distributes air, and as dampness is present to a greater the gas and constitutes a part of the preheat- 2 5 or less degree in the air, as generally fed to ing and combustion chambers.

, the burner, so that a variation in the light The invention further consists in a doubleresults, the damp air being constantly carwire support for the mantle, holding the manried into the combustion chamber by the tle in the center and preventing it from being cold-air draft at the bottom of the burner, burned out at one side, which is frequently 30 thereby producing in connection with the the case where a single wire is employed. cold damp gas a gloomy light and at times Finally, the invention consists in means for only a partial lighting of the mantle. It is supporting this wire and mantle, which is caan object of my present invention to overpable of being easily removed from the burner come this objection of the introduction of a when occasion may require the renewal of the 35 cold-air draft and the dampness of the air by mantle.

constructing a preheating gas-chamber and Also, myinvention consists in certain novel a hot-air draft for the combustion and mixfeatures of construction and combinations of ing chambers. In the first place the gas enparts,which will be hereinafter described,and o ters the preheating chamber or space, where pointed out in the claims.

40 the dampness of gas is removed by passing in In the accompanying drawings, Figure 1 is and through this preheating-space, making a view in vertical section of my improved the gas pure and light. The heating of the burner, showing the mantle and chimney in preheating chamber or space results from the place thereon. Fig. 2 is a horizontal section hot air constantly passing between it and the on line 2 2 of Fig. 1. Fig. 3 is a horizontal 45 combustion chamber, which circulation is section on line 3 3 of Fig. 1. Fig. 4c is a View kept up as long as the gas is'turned on. In in elevation of the burner. Fig. 5 is a plan the second place after the gas leaves the pre- View. Fig. 6 is a view of the pillar, and Fig. heating-chamber it enters the combustion 7 is a detail. [03 and mixing chamber, where it is mixed with A represents the gas-pillar, it being inter- 50 light hot air taken in through the hot-air nally threaded at the lower end for attachdraft space surrounding the combustionment to the gas-fixture and externally threadchamber through holes in the bottom of the ed at the upper end, as at 1, for the attachment of the burner, as will be hereinafter described. The pillar is provided with a circumferential flange or shoulder 2, upon which the preheating-chamber,to be described, rests. It is recessed at 3 3 for the passage of gas on each side of the partition 3 which separates said recesses 3 3, and is provided with ducts 4 and 5, leading from the lower bore 6 to one of the recesses 3 and to the upper bore 7 from the other recess 3, respectively. A flange 8, in the form of a screw, is adapted to be set to regulate the feed of gas through the burner.

B indicates a preheating-chamber which surrounds the pillar and, as stated, rests at its lower end upon the flange 2 of the pillar. This preheating-chamber preferably extends upwardly some distance above the upper end of the pillar and is provided with perforations 9 for the passage of gas into and out of this preheating-chamber. The preheating-chamber and pillar are held together by a nut 10, which turns on a thread 1 of the pillar until it engages the preheating-chamber and locks and support combustion.

it securely between it and the annular flange 2 on the pillar.

0 indicates the shell of the mixing-chamber. This chamber is restricted at its lower end and provided with internal screw-threads 11, which turn down upon the external threads of the pillar and hold the mixing-chamber in position thereon. The space 12 between this mixing-chamber and the preheating-chamber constitutes an extended or circuitous air-inlet through which all of the air for supporting combustion is drawn and supplied, and this air issues through the slots 13 13, arranged in an annulus around the protruding end of the pillar, where it is adapted to mix with the gas issuing from the pillar at this point. The

object of this arrangement, whereby the mix ing-chamber is screwed to the pillar, is to afford a vertical adjustment of the mixing-chamber with respect to the preheating-chamber, whereby the size of the annular air-space 12 is regulated to supply a greater or less quantity of air, as required to mix with the gas In consequence of this juxtaposition and arrangement the airspace 12 is kept constantly and uniformly heated, and in like manner the preheatingchamber in which the gas circulates is kept heated from the heated film of air, thus eliminating dampness from the gas contained in said preheating-chamber, and also causes it to expand and issue through the duct 5 into the mixing-chamber G, where the gas and air commingle and unite to supply the burner above.

D represents a spreader, which rests at the upper end of the mixing-chamber and spreads the commingled gas and air. Over this the convexed wire screen or cap 14: is placed.

The incandescent mantle E depends from a point sufficiently high above the burner, as shown at the loop 16, conveniently by means of an S-shaped hook 17, and this double wire is mounted upon a flanged ring 18, which surrounds the superheated chamber, where it is held by means of spring-hooks 19. In this way the mantle is held centrally in place against accidental displacement, so that it is heated uniformly throughout its area,

and in this way the mantle may be easily removed at any time.

F is a gallery, which rests upon a flange 20 on the exterior of the preheating-chamber. This gallery has air-passages 21, and it is adapted to support the chimney 22 and is provided with a shade-support 23.

From the foregoing it will be seen that the parts can be easily removed and adjusted, the requisite quantity of gas regulated, the supply of air graduated, and at the same time both the air and gas are heated before mixing and the natural dampness of the gas is eliminated. Also it will be seen that the mantle is held firmly in an upright position, where it stands in the flame uniformly throughout its surface. Likewise, it will be observed, the parts are so constructed that they may be not only adjusted with facility, but, furthermore, they can be dismembered and the entire burner dismantled or assembled with perfect ease and convenience.

It is evident that slight changes might be resorted to in the form and arrangement of the several parts described without departing from the spirit and scope of my invention, and hence I do not wish to limit myself to the exact construction herein set forth; but,

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

l. The combination with a pillar, and a gas burner, of a preheating-chamber heated by a flame from the burner, through which preheating-chamber the gas passes on its way to the burner, said preheating-chamber closed at its upper end and opening at its lower end into the pillar.

2. The combination with a pillar, and a gasburner, of an annular preheating-chamber heated by a flame from the burner, through which preheating-chamber the gas passes on its way to the burner, said preheating-chamber closed at its upper end and opening at its lower end into the pillar.

3. The combination with a pillar provided with a pair of external recesses separated by an intermediate partition, and a burner, of a preheating-chamber to which gas is supplied through one of said recesses and from which it issues into the other recess.

4 4:. The combination with a pillar having two distinct bores and provided with a pair of external recesses separated by an intermediate partition, and a burner supported on said pillar, of a preheating-chamber heated by the burner-flame and which receives gas from the lower bore and discharges it into the upper bore of the pillar.

5. The combination with a pillar having a flange or shoulder thereon and provided with screW-th reads,of an annular preheating-cham chamber in position between it and the flange or shoulder.

6. The combination with a pillar having a shoulder thereon, of a preheatingchamber and a slotted mixingchamber adjustable upon said pillar whereby to regulate the size of the space between said mixing-chamber and the preheating-chamber for the passage of air therethrough.

7. The combination withapillar having external screw-threads thereon, of a preheat-ingchamber and a mixing-chamber held on said pillar the latter adapted to screw up and down thereon whereby to regulate the space hetween'the two for the inlet of air into the mixing-chamber. i

S. The combination with a pillar having two distinct bores, a pair of external recesses, a partition between said recesses, and ducts for communication between said recesses and bores, of an annular preheating-chamber, and a slotted mixing-chamber mounted on said pillar, the former having holes which communicate with the recesses in the sides of the pillar, and the mixing-chamber adjustable upon the pillar whereby to regulate the size of the space between it and the combustionchamber.

9. The combination with a pillar and a preheating-chamber, of a ring removably secured to said preheating-chamber, a double wire attached to and supported by said ring and a mantle suspended therefrom.

10. The combination with a pillar and a preheating-ch amber, of arin g removably secured to said preheating-chamber, a double wire attached to and supported by said ring, a mantle suspended therefrom and a spring device connected with said ring for attaching it to the preheating-chamber.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES A. BLUHM.

Witnesses:

HENRY H. BLUHM, JOHN ROZEAN. 

